Finding the Fourth Proportional to 1,986.94, 2,741.86 and 1,102.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.94 : 2,741.86 = 1,102.72 : x
2. Step 2: Convert to fraction form
   1,986.94/2,741.86 = 1,102.72/x
3. Step 3: Cross multiply
   1,986.94x = 2,741.86 × 1,102.72
4. Step 4: Simplify right side
   1,986.94x = 3,023,503.86
5. Step 5: Solve for x
   x = 3,023,503.86/1,986.94
6. Step 6: Final answer
   x = 1,521.69